Tiebacks minimum j-bolts?

Tiebacks minimum j-bolts?

• A. 2
• B. 4
• C. 3
• D. 5

Answer: (C)

The key idea is that tiebacks must have enough anchor points to share the load and resist movement in multiple directions. With only two anchors, the force can pull the system along a single line, making it easy for the tieback to pivot or pull out if the load isn’t perfectly aligned. When anchors form a non‑collinear pattern, like a triangle, the load is distributed among all anchors, providing stability against lateral and vertical components and adding redundancy so that a single anchor failure won’t lead to total collapse. In practice, this non‑collinear, multi-anchor arrangement is the minimum setup needed to reliably secure a tieback with J‑bolts.

The key idea is that tiebacks must have enough anchor points to share the load and resist movement in multiple directions. With only two anchors, the force can pull the system along a single line, making it easy for the tieback to pivot or pull out if the load isn’t perfectly aligned. When anchors form a non‑collinear pattern, like a triangle, the load is distributed among all anchors, providing stability against lateral and vertical components and adding redundancy so that a single anchor failure won’t lead to total collapse. In practice, this non‑collinear, multi-anchor arrangement is the minimum setup needed to reliably secure a tieback with J‑bolts.